1119992540209 has 9 divisors (see below), whose sum is σ = 1159976497953. Its totient is φ = 1081342475472.

The previous prime is 1119992540083. The next prime is 1119992540239. The reversal of 1119992540209 is 9020452999111.

It is a happy number.

The square root of 1119992540209 is 1058297.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 331931538225 + 788061001984 = 576135^2 + 887728^2 .

It is not a de Polignac number, because 1119992540209 - 2³¹ = 1117845056561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1119992540239) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 30672367 + ... + 30708859.

Almost surely, 2^{1119992540209} is an apocalyptic number.

1119992540209 is the 1058297-th square number.

1119992540209 is the 529149-th centered octagonal number.

It is an amenable number.

1119992540209 is a deficient number, since it is larger than the sum of its proper divisors (39983957744).

1119992540209 is an frugal number, since it uses more digits than its factorization.

1119992540209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73044 (or 36522 counting only the distinct ones).

The product of its (nonzero) digits is 524880, while the sum is 52.

The spelling of 1119992540209 in words is "one trillion, one hundred nineteen billion, nine hundred ninety-two million, five hundred forty thousand, two hundred nine".